summaryrefslogtreecommitdiff
path: root/board/delta/nand.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/delta/nand.c')
-rw-r--r--board/delta/nand.c110
1 files changed, 57 insertions, 53 deletions
diff --git a/board/delta/nand.c b/board/delta/nand.c
index 85a6ba2..119a587 100644
--- a/board/delta/nand.c
+++ b/board/delta/nand.c
@@ -26,6 +26,7 @@
#include <nand.h>
#include <asm/arch/pxa-regs.h>
+#include <asm/io.h>
#ifdef CONFIG_SYS_DFC_DEBUG1
# define DFC_DEBUG1(fmt, args...) printf(fmt, ##args)
@@ -95,7 +96,7 @@ static void dfc_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
if(bytes_multi) {
for(i=0; i<bytes_multi; i+=4) {
long_buf = (unsigned long*) &buf[i];
- NDDB = *long_buf;
+ writel(*long_buf, NDDB);
}
}
if(rest) {
@@ -120,7 +121,7 @@ static void dfc_read_buf(struct mtd_info *mtd, u_char* const buf, int len)
if(bytes_multi) {
for(i=0; i<bytes_multi; i+=4) {
long_buf = (unsigned long*) &buf[i];
- *long_buf = NDDB;
+ *long_buf = readl(NDDB);
}
}
@@ -166,8 +167,8 @@ static u_char dfc_read_byte(struct mtd_info *mtd)
unsigned long dummy;
if(bytes_read < 0) {
- read_buf = NDDB;
- dummy = NDDB;
+ read_buf = readl(NDDB);
+ dummy = readl(NDDB);
bytes_read = 0;
}
byte = (unsigned char) (read_buf>>(8 * bytes_read++));
@@ -181,7 +182,7 @@ static u_char dfc_read_byte(struct mtd_info *mtd)
/* calculate delta between OSCR values start and now */
static unsigned long get_delta(unsigned long start)
{
- unsigned long cur = OSCR;
+ unsigned long cur = readl(OSCR);
if(cur < start) /* OSCR overflowed */
return (cur + (start^0xffffffff));
@@ -192,7 +193,7 @@ static unsigned long get_delta(unsigned long start)
/* delay function, this doesn't belong here */
static void wait_us(unsigned long us)
{
- unsigned long start = OSCR;
+ unsigned long start = readl(OSCR);
us = DIV_ROUND_UP(us * OSCR_CLK_FREQ, 1000);
while (get_delta(start) < us) {
@@ -202,14 +203,14 @@ static void wait_us(unsigned long us)
static void dfc_clear_nddb(void)
{
- NDCR &= ~NDCR_ND_RUN;
+ writel(readl(NDCR) & ~NDCR_ND_RUN, NDCR);
wait_us(CONFIG_SYS_NAND_OTHER_TO);
}
/* wait_event with timeout */
static unsigned long dfc_wait_event(unsigned long event)
{
- unsigned long ndsr, timeout, start = OSCR;
+ unsigned long ndsr, timeout, start = readl(OSCR);
if(!event)
return 0xff000000;
@@ -221,9 +222,9 @@ static unsigned long dfc_wait_event(unsigned long event)
* OSCR_CLK_FREQ, 1000);
while(1) {
- ndsr = NDSR;
+ ndsr = readl(NDSR);
if(ndsr & event) {
- NDSR |= event;
+ writel(readl(NDSR) | event, NDSR);
break;
}
if(get_delta(start) > timeout) {
@@ -243,11 +244,11 @@ static void dfc_new_cmd(void)
while(retry++ <= CONFIG_SYS_NAND_SENDCMD_RETRY) {
/* Clear NDSR */
- NDSR = 0xFFF;
+ writel(0xfff, NDSR);
/* set NDCR[NDRUN] */
- if(!(NDCR & NDCR_ND_RUN))
- NDCR |= NDCR_ND_RUN;
+ if (!(readl(NDCR) & NDCR_ND_RUN))
+ writel(readl(NDCR) | NDCR_ND_RUN, NDCR);
status = dfc_wait_event(NDSR_WRCMDREQ);
@@ -357,9 +358,9 @@ static void dfc_cmdfunc(struct mtd_info *mtd, unsigned command,
}
write_cmd:
- NDCB0 = ndcb0;
- NDCB0 = ndcb1;
- NDCB0 = ndcb2;
+ writel(ndcb0, NDCB0);
+ writel(ndcb1, NDCB0);
+ writel(ndcb2, NDCB0);
/* wait_event: */
dfc_wait_event(event);
@@ -372,36 +373,36 @@ static void dfc_gpio_init(void)
DFC_DEBUG2("Setting up DFC GPIO's.\n");
/* no idea what is done here, see zylonite.c */
- GPIO4 = 0x1;
-
- DF_ALE_WE1 = 0x00000001;
- DF_ALE_WE2 = 0x00000001;
- DF_nCS0 = 0x00000001;
- DF_nCS1 = 0x00000001;
- DF_nWE = 0x00000001;
- DF_nRE = 0x00000001;
- DF_IO0 = 0x00000001;
- DF_IO8 = 0x00000001;
- DF_IO1 = 0x00000001;
- DF_IO9 = 0x00000001;
- DF_IO2 = 0x00000001;
- DF_IO10 = 0x00000001;
- DF_IO3 = 0x00000001;
- DF_IO11 = 0x00000001;
- DF_IO4 = 0x00000001;
- DF_IO12 = 0x00000001;
- DF_IO5 = 0x00000001;
- DF_IO13 = 0x00000001;
- DF_IO6 = 0x00000001;
- DF_IO14 = 0x00000001;
- DF_IO7 = 0x00000001;
- DF_IO15 = 0x00000001;
-
- DF_nWE = 0x1901;
- DF_nRE = 0x1901;
- DF_CLE_NOE = 0x1900;
- DF_ALE_WE1 = 0x1901;
- DF_INT_RnB = 0x1900;
+ writel(0x1, GPIO4);
+
+ writel(0x00000001, DF_ALE_nWE1);
+ writel(0x00000001, DF_ALE_nWE2);
+ writel(0x00000001, DF_nCS0);
+ writel(0x00000001, DF_nCS1);
+ writel(0x00000001, DF_nWE);
+ writel(0x00000001, DF_nRE);
+ writel(0x00000001, DF_IO0);
+ writel(0x00000001, DF_IO8);
+ writel(0x00000001, DF_IO1);
+ writel(0x00000001, DF_IO9);
+ writel(0x00000001, DF_IO2);
+ writel(0x00000001, DF_IO10);
+ writel(0x00000001, DF_IO3);
+ writel(0x00000001, DF_IO11);
+ writel(0x00000001, DF_IO4);
+ writel(0x00000001, DF_IO12);
+ writel(0x00000001, DF_IO5);
+ writel(0x00000001, DF_IO13);
+ writel(0x00000001, DF_IO6);
+ writel(0x00000001, DF_IO14);
+ writel(0x00000001, DF_IO7);
+ writel(0x00000001, DF_IO15);
+
+ writel(0x1901, DF_nWE);
+ writel(0x1901, DF_nRE);
+ writel(0x1900, DF_CLE_nOE);
+ writel(0x1901, DF_ALE_nWE1);
+ writel(0x1900, DF_INT_RnB);
}
/*
@@ -430,7 +431,7 @@ int board_nand_init(struct nand_chip *nand)
dfc_gpio_init();
/* turn on the NAND Controller Clock (104 MHz @ D0) */
- CKENA |= (CKENA_4_NAND | CKENA_9_SMC);
+ writel(readl(CKENA) | (CKENA_4_NAND | CKENA_9_SMC), CKENA);
#undef CONFIG_SYS_TIMING_TIGHT
#ifndef CONFIG_SYS_TIMING_TIGHT
@@ -485,17 +486,19 @@ int board_nand_init(struct nand_chip *nand)
tRP_high = 0;
}
- NDTR0CS0 = (tCH << 19) |
+ writel((tCH << 19) |
(tCS << 16) |
(tWH << 11) |
(tWP << 8) |
(tRP_high << 6) |
(tRH << 3) |
- (tRP << 0);
+ (tRP << 0),
+ NDTR0CS0);
- NDTR1CS0 = (tR << 16) |
+ writel((tR << 16) |
(tWHR << 4) |
- (tAR << 0);
+ (tAR << 0),
+ NDTR1CS0);
/* If it doesn't work (unlikely) think about:
* - ecc enable
@@ -512,7 +515,7 @@ int board_nand_init(struct nand_chip *nand)
*/
/* NDCR_NCSX | /\* Chip select busy don't care *\/ */
- NDCR = (NDCR_SPARE_EN | /* use the spare area */
+ writel(NDCR_SPARE_EN | /* use the spare area */
NDCR_DWIDTH_C | /* 16bit DFC data bus width */
NDCR_DWIDTH_M | /* 16 bit Flash device data bus width */
(2 << 16) | /* read id count = 7 ???? mk@tbd */
@@ -528,7 +531,8 @@ int board_nand_init(struct nand_chip *nand)
NDCR_SBERRM | /* single bit error ir masked */
NDCR_WRDREQM | /* write data request ir masked */
NDCR_RDDREQM | /* read data request ir masked */
- NDCR_WRCMDREQM); /* write command request ir masked */
+ NDCR_WRCMDREQM, /* write command request ir masked */
+ NDCR);
/* wait 10 us due to cmd buffer clear reset */
generated by cgit v1.1 at 2024-12-02 12:21:11 +0000